/*
 * Copyright (C) 2010 Fred Barrie
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.aergia.vinny.util;

/**
 * @author fred
 */
public final class HexUtil {

	/**
	 * Create a hex string for the byte array.
	 * 
	 * @param buffer
	 * @return a hex string for the supplied buffer
	 */
	public static String encode(final byte[] buffer) {
		final StringBuilder sb = new StringBuilder();
		for (final byte b : buffer) {
			int value = b;
			if (value < 0) {
				value += 256;
			}
			final String s = Integer.toHexString(value);
			if (s.length() == 1) {
				sb.append("0");
			}
			sb.append(s);
		}
		return sb.toString();
	}

	private HexUtil() {
		// empty
	}
}
